Dataset Information

Rare earth element identification and quantification in millimetre-sized Ryugu rock fragments from the Hayabusa2 space mission.

ABSTRACT: Millimetre-sized primordial rock fragments originating from asteroid Ryugu were investigated using high energy X-ray fluorescence spectroscopy, providing 2D and 3D elemental distribution and quantitative composition information on the microscopic level. Samples were collected in two phases from two sites on asteroid Ryugu and safely returned to Earth by JAXA's asteroid explorer Hayabusa2, during which time the collected material was stored and maintained free from terrestrial influences, including exposure to Earth's atmosphere. Several grains of interest were identified and further characterised to obtain quantitative information on the rare earth element (REE) content within said grains, following a reference-based and computed-tomography-assisted fundamental parameters quantification approach. Several orders of magnitude REE enrichments compared to the mean CI chondrite composition were found within grains that could be identified as apatite phase. Small enrichment of LREE was found for dolomite grains and slight enrichment or depletion for the general matrices within the Ryugu rock fragments A0055 and C0076, respectively.

Graphical abstract

Supplementary information

The online version contains supplementary material available at 10.1186/s40623-022-01705-3.

SUBMITTER: Tack P

PROVIDER: S-EPMC9516535 | biostudies-literature | 2022

REPOSITORIES: biostudies-literature

ACCESS DATA

Publications

Rare earth element identification and quantification in millimetre-sized Ryugu rock fragments from the Hayabusa2 space mission.

Tack Pieter P De Pauw Ella E Tkalcec Beverley B Lindner Miles M Bazi Benjamin B Vekemans Bart B Brenker Frank F Di Michiel Marco M Uesugi Masayuki M Yurimoto Hisayoshi H Nakamura Tomoki T Amano Kana K Matsumoto Megumi M Fujioka Yuri Y Enokido Yuma Y Nakashima Daisuke D Noguchi Takaaki T Okazaki Ryuji R Yabuta Hikaru H Naraoka Hiroshi H Sakamoto Kanako K Tachibana Shogo S Yada Toru T Nishimura Masahiro M Nakato Aiko A Miyazaki Akiko A Yogata Kasumi K Abe Masanao M Okada Tatsuaki T Usui Tomohiro T Yoshikawa Makoto M Saiki Takanao T Tanaka Satoshi S Terui Fuyuto F Nakazawa Satoru S Watanabe Sei-Ichiro SI Tsuda Yuichi Y Vincze Laszlo L

Earth, planets, and space : EPS 20220928 1

Millimetre-sized primordial rock fragments originating from asteroid Ryugu were investigated using high energy X-ray fluorescence spectroscopy, providing 2D and 3D elemental distribution and quantitative composition information on the microscopic level. Samples were collected in two phases from two sites on asteroid Ryugu and safely returned to Earth by JAXA's asteroid explorer Hayabusa2, during which time the collected material was stored and maintained free from terrestrial influences, includi ...[more]

PMID: 36185784

Similar Datasets

Project description:Background: The International Space Station is an orbiting laboratory for microbial research in space, where microorganisms can be exposed to multiple extremes. Dehydrated cell clusters of extremophilic bacterium Deinococcus radiodurans have survived 3-year exposure outside the International Space Station in frames of the Tanpopo mission. We investigated the robust molecular machinery of Deinococcus radiodurans involved in its recovery after long-term space travel. Methods: The space-exposed and ground control cells of Deinococcus radiodurans were recovered in a complex medium for 5 and 15 h and investigated using integrative –omics techniques combined with electron microscopy tools. Consolidative transcriptomic, proteomic, and metabolomic analyses were performed to investigate molecular kinetics of cell recovery after 3-year exposure to low Earth orbit. Results: Ultrastructure analysis showed that Deinococcus radiodurans cells remained intact after low Earth orbit exposure for 3 years. Multiscale molecular analysis revealed significant alterations in response to long-term space travel. Key adaptations included upregulated DNA repair genes,stress response regulators, and oxidative stress scavenging enzymes. Proteins associated with transmembrane processes, cell division, and stress defence were also upregulated. Metabolomic analysis showed that only a few amino acids, sugars, and specific metabolites were more abundant after low Earth orbit exposure, suggesting energy conservation for molecular repair and regulation.Primordial stress molecule spermidine is also involved in cells recovery, helping combat the stress factors after space travel. Conclusion: Comparative –omics profile of extracted mRNA, proteins and metabolites allowed us to propose a multiscale dynamic molecular response of Deinococcus radiodurans after 3 years of space exposure. The kinetic profile with 2 timepoints during post-exposure analysis enabled the identification of foreground molecular targets employed by this microorganism in recovery after a space journey. Altogether, a multi-omics approach towards space-exposed cells revealed a strong focus on repair mechanisms, stress defence, and the utilization of external resources during the initial recovery phase. These findings expand our understanding of the molecular mechanisms employed by extremophiles to survive in space, providing implications for astrobiology and future space exploration.

Dataset Information

Rare earth element identification and quantification in millimetre-sized Ryugu rock fragments from the Hayabusa2 space mission.

Graphical abstract

Supplementary information

Publications

Rare earth element identification and quantification in millimetre-sized Ryugu rock fragments from the Hayabusa2 space mission.

Similar Datasets

OmicsDI is part of the ELIXIR infrastructure

Tweets